Hydraulic swivel.



No. 799,597. PATENTED SEPT. 12, 190 L. B. BMBRY.

HYDRAULIC SWIVEL.

APPLICATION FILED SEPT. 15,1902.

3 SHEETS-SHEET 1.

ANDREW. a. GRANAM 00., Pnomumusmwsns. wAsnmuwn, n. c,

PATBNTEDSEPT. 12, 1905.

L. B. BMBRY.

HYDRAULIC SWIVEL.

APPLICATION rum) SEPT. 15,1902.

3 SHEETS-SKBBT 2.

fi'LUflU/ OTF $014M 6. Sana,

PATENTED SEPT. 12, 190-5.

L. B. EMBRY. HYDRAULIC SWIVEL.

APPLICATION FILED SEPT. 15,1902.

3 SHEETS-$33171 8.

Elva/Z7592, l mmx /3, {W4 {VCQM 62;):

UNITED STATES PATENT OFFICE.

LEONARD B. EMBRY, OF MIDLOTHIAN, TEXAS, ASSIGNOR TO ARTHUR CAMERON, OF CHICAGO, ILLINOIS.

HYDRAULIC SWIVEL.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed September 15, 1902. Serial No. 123,456.

To a whom, it may concern: I

Be it known that I, LEONARD B. EMBRY, a citizen of the United States, residing at Midlothian, in the county of Ellis and State of Texas, have invented a certain new and useful Improvement in Hydraulic Swivels, of which.

the following is a specification.

Objects of my invention are to provide a simple, compact, and eflicient water-swivel for well-drilling machines, to reduce friction between the water-swivel and the drill-rod, and to provide certain novel and improved details of construction and arrangement.

In the accompanying drawings, Figure l is a side elevation of the upper portion of a wellmachine including the upper portion of the derrick and the water-swivel. Fig. 2 shows the water swivel, partly in elevation and partly in vertical central section, on a larger scale than in Fig. 1. Fig. 3 is aview similar to Fig. 2, showing, however, a slight modification in the construction of a portion of the water-swivel, as hereinafter explained.

E indicates the hollow drill-rod, which is understood to be revolved axially during its usual reciprocating or jumping action, and in order to permit a supply of water to be forced down through the hollow drill-rod I provide a water-swivel which, as shown in Fig. 2, is constructed as follows: The hollow drill-rod passes through a bearing frame or plate R,

which is suspended from any ordinary or suit-.

able tackle-block F, Fig. 1, by a suspending device, such as a yoke S, having its ends inserted through the marginal portion of the frame or plate R and provided with nuts on their terminal portions below the said frame or plate. A tube or pipe section T, having an inlet-coupling, such as a hollow T- head 26, (see also Fig. 1,) has its lower end portion fitted as a sleeve within the upper end portion of the hollow drill-rod, so as to form a swivel-joint, and for the purpose of introducing a supply of water the hollow T-head 26 is connected at one end with a flexible hosepipe 27, the opposite end of the horizontal portion of the T-head being closed, as at 28, by a suitable cap or plug. In order to prevent leakage, the tube-section T and the hollow drill -rod extend within a stufling-box U, containing a suitable packing 29, the said stuffing-box being internally threaded and screwed upon an external portion 30 of the drill-rod. Antifriction cone-shaped rolls V are arranged between bearings formed by ring-plates 31 and 32 and.journaled in a pair of annular bearings or rings 33 and 34, which lie between the bearings 31 and 32. These annular bearings or ring-plates 31 and 32 are grooved in conformity with and to form tracks for the antifriction-rolls V, said plates or bearings 31 and 32 being arranged around the welltube, with the power plate or bearing 32 supported upon the frame or plate R. A nut 35 is screwed upon a threaded portion 30 of the drill-rod and adjusted against the upper ringplate or annular bearing 31, and a nut 36 is applied to the drill-rod and fitted against the under side of the frame or plate R. The drillrod can be externally threaded for the nut 36, or the latter can be secured to the drill-rod by a set-screw, as indicated by dotted lines. The tube-section T is tied to the frame or plate R by a yoke 38, arranged to cross and engage the upper horizontal portion of the T-head 26 and having its lower end portions inserted through the frame or plate R and provided with nuts 39, which are tightened against said plate or frame. Duringoperation the hollow drill-rod and the stuffing-box will turn independently of the tube-section T, and during such operation the nut 35 and the upper ring plate or bearing 31 will turn with the drillrod, it being seen that the weight of the drillrod is sustained by the antifriction-rolls V, which latter are in turn supported by the frame or plate R, carrying a lower bearing 32 for the antifriction-rolls.

In Fig. 3 the construction of water-swivel shown is generally similar to that shown in Fig. 2. In said two figures the same parts are correspondingly indicated by reference numerals and letters. The modifications in Fig. 3 are as follows: The nut 36 is threaded and screwed upon a threaded portion of the tube or hollow drill-rod E, which is shown as comprising a lower section 40 and an upper section 11, held together by a coupling 42, arrangedbelow the nut 36. Theinlet-coupling or hollow T-head 26 corresponding in function with the inlet-coupling or hollow T-head 26 of Fig. 2, is provided with or screwed upon a tube-section T, which corresponds with the tube-section T of Fig. 2,but which in place of being fitted within the tube or hollow rod E is fitted upon the latter as an outer sleeve and externally threaded, so as to screw into a stufiing-box V, corresponding in function with the stufiing-box V of Fig. 2. The construction illustrated by Figs. 2 and 3 involve,

- however, the following features common to both, to wit: The tube E, which may be a tube or a tubular drill-rod, is arranged to extend through and revolve independently of a bearing frame or plate R, which is attached to suspending means, such as a yoke S or other analogous device. The tube E also has a swivel connection with the inlet-coupling which is tied to the frame or plate R, and the antifriction-rolls, which take the weight of the tube E, are arranged between the frame or plate R and a stop or shoulder 35 on the tube. In Fig. 2 the stuffing-box V turns with the tube E, to which it is secured, as by athreaded joint, and hence turns upon the short tube, section T of the inlet-coupling, while in Fig. 3 the tube E turns independently of the stuffing-box, the latter being secured to the inlet-coupling by the short tube-section or sleeve T, which receives the upper end portion of the tube E. In each case, however, the stuffing-box is exposed and readily accessible, and the inlet-coupling with which the hose is connected is tied to the bearing-plate in a simple and effective way, permitting its detachment without disturbing the antifriction-rolls and their bearings. The plate or nut 35, which forms a stop or shoulder on the tube E, is adjustable thereon, and the stuffingbox can be easily adjusted for the purpose of tightening up the packing.

What I claim as my invention is 1. In a water-swivel for well-drilling machines, a bearing frame or plate and a suspending device extending upwardly therefrom; a tube extending through an opening in the bearing frame or plate; an inlet-coupling having a swivel connection with the upper end portion of said tube and tied to the bearing frame or plate; a bearing on the said tube at a point between the inlet-coupling and the bearing frame or plate; and antifriction-rolls arranged between said bearing on the tube and the bearing frame or plate and sustaining the weight of the tube.

2. In a water-swivel for well-drilling machines, a bearing frame or plate with which the well-tube or hollow drill-rod has a swivel connection; an inlet-coupling tied to said bearing frame or plate and having ahollow stem or tube-section fitted to the upper end portion of the well-tube or hollow drill-rod, and a stufling-box for the joint between said sleeve or tube-section on the inlet-coupling and the well-tube or hollow drill-rod, said well-tube or hollowdrill-rod being arranged to turn independently of the sleeve or tube-section on the inlet-coupling.

, 3. In a water-swivel for well-drilling machines, the combination with a well-tube or hollow drill-rod, of a bearing frame or plate B through which the well-tube or hollow drillrod extends, said tube or rod being rotatable independent of said bearing frame or plate; a

suspendingyoke S attached to the bearing frame or plate; an inlet-coupling having a swivel connection with the well-tube or hollow drill-rod, and tied to the bearing frame or plate by a yoke 38; a nut 35 on the well-tube or hollow drill-rod; bearing-rings 31 and 32 between the nut 35 and the bearing frame or plate; and antifriction-rolls arranged between said bearing-rings.

i. In a water-swivel for well-drilling'machines, a bearing frame or plate R; a welltube or hollow drill-rod extending through and rotatable independently of the bearing frame or plate; an inlet-coupling having a swivel connection with the well-tube or hollow drill-rod and held against rotation independently of the bearing frame or plate; a sleeve or tube-section extending downwardly from the inlet-coupling and fitted to the upper end portion of the well-tube or hollow drill-rod which is revoluble independent of said sleeve or tube-section; and a stuffing-box arranged to prevent leak at the swivel-joint formed by said sleeve or tube-section and the upper end portion of the well-tube or hollow drill-rod.

5. In a water-swivel for well-drillingmachines, a plate having an opening for the drillrod; a suspending-yoke having the lower ends of its arms attached to the plate at opposite sides of the opening in the latter; a drill-rod extending through and arranged to turn with in the opening in said plate and externally threaded at a point above the latter; bearings and antifriction-rolls arranged between said nut and plate; and an inlet-coupling having a swivel connection with the upper portion of the drill-rod and tied to the plate in which the drill-rod is arranged to revolve.

LEONARD B. EMBRY.

Witnesses:

CHARLES G. PAGE, OTTILIE C. MEERING. 

